Video scopes laid out around a live ATEM multiview. Waveform, vectorscope, histogram, false colour, zebras and focus peaking on any multiview window, program and preview included, with each source named live from the switcher's own multiviewer config. There's a desktop app and a browser build.
This is the browser build, and it needs JavaScript and WebGL2. It captures the multiview over USB; naming sources live from the switcher is the desktop app's job, because the ATEM protocol is UDP and a web page can't send UDP.
Project page · User guide · Source on GitHub